our producers tracked george riekers down in florida. what do you say to the family? they say the therapy you did to him as a child led to the suicide as an adult. >> i would say scientifically that would be inaccurate to assume that it was the therapy, but i do grieve for the parents now that you've told me that news. i think that's very sad. >> reporter: according to the american psychiatric association, the potential risk of reparative therapy is great, including depression, anxiety and self-destructive behavior. the association says therapists' alignment with societal prejudices against homosexuality may reinforce the self-hatred already felt by patients. dr. nicolosi says his therapy isn't harmful, and he only treats people who want to change. not true, says ryan kendall. >> it led me to periods of homelessness, to drug abuse, to spending a decade of my life wanting to kill myself. it led to so much pain and struggle, and i want them to know that what they do hurts people. it hurts children. it has no basis in fact. and they need to stop. >> reporter: randi kaye,